CN102348908A - Composition for correcting tire-wheel assembly imbalances, force variations and vibrations - Google Patents
Composition for correcting tire-wheel assembly imbalances, force variations and vibrations Download PDFInfo
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- CN102348908A CN102348908A CN2010800113156A CN201080011315A CN102348908A CN 102348908 A CN102348908 A CN 102348908A CN 2010800113156 A CN2010800113156 A CN 2010800113156A CN 201080011315 A CN201080011315 A CN 201080011315A CN 102348908 A CN102348908 A CN 102348908A
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- wheel assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/32—Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels
- F16F15/36—Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels operating automatically, i.e. where, for a given amount of unbalance, there is movement of masses until balance is achieved
- F16F15/363—Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels operating automatically, i.e. where, for a given amount of unbalance, there is movement of masses until balance is achieved using rolling bodies, e.g. balls free to move in a circumferential direction
Abstract
Particular embodiments of the present invention include methods and compositions for improved correction of force imbalances, force variations, and/or dampening of vibrations in a tire-wheel assembly. In particular embodiments, the composition includes a plurality of particles for positioning within a pressurization chamber of the tire-wheel assembly, wherein said particles include a void. Further embodiments provide a void containing a tire balancing material or a viscoelastic material. The particle may also be formed of viscoelastic material. Methods of the present invention include the steps of: providing a tire-wheel assembly; providing a plurality of particles having a void; and placing said plurality of particles into a pressurization chamber within said tire-wheel assembly.
Description
It is the preference of 61/143,543 U.S. Provisional Patent Application that this world application requires in the application number that on January 9th, 2009 submitted to, and its content is incorporated this paper by reference into.
Background of invention.
Technical field
The present invention relates to a kind of being used for reduces the fluctuation that acts on pneumatic tire and/or the wheel and/or the synthetic that comprises a plurality of particles of vibration at tire and wheel (" tire wheel ") assembly duration of work.Especially, the present invention provides a kind of synthetic, and it comprises particle or other has the chamber that holds fluid (like air), or the medium of any other wheel balance or energy absorbing material.
Background technique
Tire is used for improving vehicle maneuverability and run smoothness by vehicle.Yet tire suffers uneven and unusual and disturbs, and this causes and acts on tire and final fluctuation and vibration on vehicle.Finally, imbalance, fluctuation and vibration have reduced vehicle maneuverability, stability and run smoothness, also cause excessive tire wear simultaneously.Therefore, if can not eliminate, usually hope to reduce acting on tire, tire wheel assembly, finally be imbalance, fluctuation and vibration on the vehicle.
Vehicle generally includes unsprung weight and sprung weight.Unsprung weight generally includes can't help the vehicle component of vehicle suspension system supporting, for example, and tire wheel assembly, knuckle, break and axle.On the contrary, sprung weight generally includes the vehicle remainder by the vehicle suspension system supporting.Unsprung weight possibly be subject to from the interference in various sources and the influence of vibration, as wearing and tearing joint, wheel alignment improper, wheel is inconsistent and the break clamping stagnation.Disturb and vibration also can derive from tire, it possibly cause by the wheel tyre defect, like tire unbanlence, tire is inconsistent and irregular treadwear.
Tire unbanlence is usually by producing with respect to the weight non-uniform Distribution of tire spin axis around tire.When tire weight along tire from a side to opposite side or when transversely non-homogeneous, also possibly produce imbalance.Tire unbanlence can be proofreaied and correct to provide to distribute around the weight balancing of tire through place extra weight at special position.Counterweight, as plumbous counterweight block of the formula that clamps or plumbous band counterweight are commonly used to tire imbalance and balance tire wheel assembly.Counterweight be applied to wheel by the indicated position of balancing machine.Also can be through a plurality of particles or pulverulent material embedding tire pressurization are indoor to realize balance, a plurality of particles or pulverulent material are forced to against tire inner surface to proofread and correct any imbalance that exists through centrifugal force.Yet, even the perfect balance of tire wheel assembly can not guarantee that tire can not suffer other interference and vibration.Even ideally the tire of balance possibly have serious vibration, it possibly derive from the nonuniformity in the tire.Therefore, the tire wheel assembly of balance possibly not have to proofread and correct the nonuniformity that during vehicle operating, influences tire wheel assembly.
The nonuniformity of tire is in the shape of tire and structural defective.Nonuniformity has influenced the performance of tire, and therefore, its influence can be measured and quantizes through the specific dynamic performance of confirming the load tire.Nonuniformity also causes the fluctuation of the power on the tire 11 that acts on via impression B.For example, tire can have specific taper effect, and it is the trend of rolling as tire such as the cone, and tire laterally moves when tyre load rotates thus.And tire may experience the unbalance deflection of carcass, and it also quantizes the trend that laterally moves of tire at the tire run duration; Yet this is because interior the aligning of tire constituent element of tire caused, but not the physical form of tire.Therefore; The fluctuation of power can be applied by tire when tyre load rotates, and this means that tire can apply power in various degree when the part with different spring constants when tire got into or withdraw from tire footprint (tyre portion of the surface engagement of moving with tire) thereon.Nonuniformity is measured by the Reeb motivation.
Fluctuation can occur on the different direction with respect to tire, and therefore possibly be quantified as radially (vertically), laterally (about) and tangential (anterior-posterior) fluctuation.Radial force fluctuation extends upward along the surface of moving thereon from tire and the vertical axis at the center through tire, vertically take place with the tire spin axis.Radial force is the strongest (for example, wheel " is beated ") in Vertical direction, as during the first tire resonance.Radial force possibly also have level (anterior-posterior, or " speed fluctuation phenomenon ") component, this be because, for example, the radial centrifugal force of clean mass unbalance in the tire of rotation.Transverse force fluctuation is with respect to the rotation axis axial orientation of tire, and the direction of tangential force fluctuation be the direction that fluctuates with transverse force perpendicular to radially, the forward and backward directions that this advances along tire usually.Transverse force causes tire swing or constant cornering force.Tangential force, or anterior-posterior power, usually in the tire footprint effect of tire direct of travel upper edge, perhaps in other words, be tangential to outside tires circumference (like, tread surface) and perpendicular to tire axis of rotation (therefore also perpendicular to radially and transverse force) direction on.The tangential force fluctuation is perceived as " pushing away-La " effect on the tire.Fluctuation also possibly take place owing to the location of tire wheel assembly is improper.
Because tire supporting vehicle sprung weight; So any dynamically irregular or interference that tire stands will cause undesirable interference and vibrate the transmission to the vehicle sprung weight; And possibly cause undesirable and rough vehicle driving smoothness, and vehicle maneuverability and stable weakening.Some vibrations possibly cause danger situation, like wheel anti-phase bounce or beat and wheel wobble (side-to-side vibrations).The radial force fluctuation does not rely on speed usually, and preceding/the back fluctuation maybe be very big with velocity variations.The tangential force fluctuation is normally unconspicuous when being lower than 40mph; Yet,, and under near the speed of 80mph, can develop into the twice size that radial force fluctuates very soon owing to tangential force fluctuation when surpassing 60mph surpasses the main cause that the radial force fluctuation becomes the unacceptable vibration of the tyre rotation that causes balance.At present, there is not feasible method to be used to weaken the tangential force fluctuation.
Developed through like the mode of grinding rubber is removed the method for the fluctuation of excessive correction from the center region of tire shoulder and/or tyre surface.These methods generally use fluctuation or conformity machine to implement, and it comprises and being used for the test tire against the assembly that freely rotates the surface rotation that loads drum.This layout causes loading drum and is moved with the mode that depends on the power that is applied by rotating tire, thereby power can be measured through the measuring device of suitably placing.Computer interpretation measurement of force result and rubber is removed from tire tread by computer-controlled lapping machine.Yet the grinding of tire has certain defective.For example, grinding possibly reduce effective tread life of tire, and it possibly cause tire to look not attractive or it possibly cause the appearance of irregular wear when tire uses on vehicle.Research shows that grinding does not weaken tangential force fluctuation (Dorfi, " tire nonuniformity and deflecting roller vibration ", tire science and technology, TSTCA, the 33rd volume, the 2nd phase, April-June,, 90-91 page or leaf in 2005).In fact, the grinding of tire possibly also increase the tangential force fluctuation in the tire.
At present, need weaken tire unbanlence, fluctuation and vibration effectively.This will allow to use the tire with excessive force fluctuation.For example, the new tire with excessive force fluctuation can be used rather than be dropped.In addition; Need weaken and/or proofread and correct the fluctuation and the vibration that occur in the tire length of life; These for example are because the location of tire wear or vehicle component is improper; Wherein above-mentionedly when any such fluctuation and/or vibration occur weaken and/or proofread and correct and to take place simultaneously (, after confirming performance issue, need not get off and analyze and/or proofread and correct each this tire).Also still need reduce rolling resistance and reduce Impact energy loss at the tire footprint place.
Summary of the invention
The present invention includes realization is proofreaied and correct the improvement of the force unbalance in the tire wheel assembly, fluctuation and/or the improvement of Vibrant buffer is proofreaied and correct synthetic and method.In specific embodiment, this synthetic comprises and is used to be positioned at a plurality of particles in the tire wheel assembly that wherein each said particle comprises the vacancy.
In other embodiments, the present invention includes the improvement method of correcting that is used for realizing tire wheel assembly is used for force unbalance, fluctuation and/or Vibrant buffer.In specific embodiment, this method comprises to be provided tire wheel assembly and the step that is positioned at a plurality of particles in the tire wheel assembly is provided, and wherein each said particle comprises the vacancy.Further step comprises the pressurized chamber that said a plurality of particles is put into said tire wheel assembly.
Aforementioned and other target, feature and advantage of the present invention will be conspicuous from the more detailed description of the following specific embodiment of the invention shown in accompanying drawing, and wherein identical reference character is represented the part that the present invention is identical.
Description of drawings
Fig. 1 shows the single wheel model of vehicle, shows the relation of sprung weight and unsprung weight;
Fig. 2 is the incomplete side view of traditional tire wheel assembly, and it comprises the tire by the wheel rim supporting, and show stop be bearing in relevant stayed surface such as the tire tread on the road surface than lower part or " impression ";
Fig. 3 is the axial vertical cross-section of position, tradition back unsprung weight that comprises the vehicle of the tire wheel assembly among Fig. 2, and also shows the lateral extent that rests on the impression on the road surface when tire during in load;
Fig. 4 is the viewgraph of cross-section of the tire wheel assembly of Fig. 3 during turning; And show difference fluctuation or the big or small a plurality of radial load power of when tyre rotation, responding between tire and road surface, and granulate mixture is forced to the mode that is in the appropriate location with respect to variable radial impact power;
Fig. 5 is a plotted curve, show according to Fig. 4 between equalizing stage under the situation of rolling/rotation the relation of impact force and the position of the relative tire of granulate mixture;
(that is the viewgraph of cross-section of) spheric granules, the vacancy is in order to provide the particle that rotates weight balancing in order to have central bore according to an embodiment of the invention for Fig. 6 A;
Fig. 6 B is the viewgraph of cross-section according to the optional embodiment's of the invention of the present disclosure oval shape particle with central bore;
Fig. 7 A is the viewgraph of cross-section of the spheric granules with non-central interior chamber according to another alternative embodiment of the present invention, rotates the unbalanced particle of weight in order to provide;
Fig. 7 B is the viewgraph of cross-section of the oval shape particle with non-central interior chamber according to another alternative embodiment of the present invention;
Fig. 8 for according to another alternative embodiment of the present invention have second kind of material partially filled or the viewgraph of cross-section of the spheric granules of the central bore of medium;
The viewgraph of cross-section of the spheric granules of Fig. 9 a plurality of chambers inner for having according to another alternative embodiment of the present invention is positioned at and that arrange along the outer surface of these particles;
Figure 10 is the perspective view of spherical particle shown in Fig. 6 A, 7A and 8;
Figure 11 is the perspective view of oval shape particle shown in Fig. 6 B and 7B.
Embodiment
At first with reference to the accompanying drawings 1, it shows the single wheel model of vehicle, wherein symbol M
sThe quality (claiming sprung weight later on) and the M of vehicle structure on the expression spring
uThe quality (claiming unsprung weight later on) of vehicle structure under the expression spring.Unsprung weight M
uUsually do not form by all, like tire wheel assembly, knuckle, break and axle through the vehicle part of vehicle suspension system supporting.Sprung weight M
sForm through the vehicle part that vehicle suspension system supports by all on the contrary.Symbol K
sThe spring constant of expression truck spring, C
sThe damping force of expression vibration damper.Unsprung weight M
uPossibly be subject to from the interference in various sources and the influence of vibration, like improper, the break clamping stagnation of joint, wheel alignment of wearing and tearing, irregular tire wear or the like.Unsprung weight M
uAlso possibly be subject to unbalanced influence in tire or wheel or the tire wheel assembly.Tire for vehicles is sprung weight M with resilience and the supporting vehicle on the road surface
s, like spring rate symbol K by tire
tRepresented.Any tyre or wheel nonuniformity all can cause variable spring rate K
t, this can cause unsprung weight M when tyre rotation
uVibration.In addition, any obstacle of running into of tire all causes bump at work, and this causes fluctuation and vibration, and these are propagated via tire and the final sprung weight M that arrives vehicle
sIn each example, imbalance, fluctuation and/or vibration all are passed to sprung weight M
sThereby, reduced vehicle driving smoothness, stability and/or maneuverability.
With reference now to accompanying drawing 2 and 3,, show tire wheel assembly 10, it is the unsprung weight M that mentions among Fig. 1
uElement.Tire 11 has defined tire wheel assembly 10 with the wheel (that is wheel rim) 12 with tyre tube valve.When tire rests on last time of working surface R (this for example can be ground or road surface), tire often radially bends, and sidewall SW1, SW2 (Fig. 2,3 and 4) often outwards heave under load.Amount of bow will and act on the load change on the tire 11 with Tyre structure and inflation.
Tire 11 contacts with working surface R through tyre surface T, when tyre surface is forced to formation impression B when leaning against working surface R.Impression B forms has the shape of length L and horizontal width W.Tire 11 also comprises and is used for tire 11 is fixed to tyre bead B1, B2 on the wheel 12.Because tyre deflection, tyre surface compression and/or frictional loss, tire 11 resists rolling under load.Therefore, each tire 11 has measurable rolling resistance when work under load.
To with vehicle unsprung weight M
uRelevant tire wheel imbalance and nonconforming correction are favourable to the vibration of the non-expectation of the overall performance of minimizing infringement maneuverability, long lifetime and vehicle and tire thereof.If uneven and nonuniformity is not proofreaied and correct, excessive fluctuation possibly cause excessive vibration and/or not be best vehicle maneuverability, stability and run smoothness, and the excessive wear of tire and other vehicle components.As previously mentioned; Even after tire wheel assembly 10 balances (promptly; Through the counterweigh quality); Nonuniformity also possibly exist with vibration; Because nonuniformity possibly independently be present in the tire, and/or for example by pavement conditions, the tire wear of the steering equipment of break clamping stagnation, wearing and tearing or suspension linkage, variation or locate improper and one or more tire strikes obstacles (" obstacle bump ") generation.Therefore; Uneven except proofreading and correct any tire or wheel; Also need at present to reduce, minimize and/or proofreaies and correct fluctuation and vibration in the appearance of tire wheel assembly 10 duration of works; And realize foregoing (that is, minimize be used to make response time) at short notice to the correction of these power and vibration.This response cycle is also referred to as convalescence.
In order to reduce, descend most change or the correction quality relevant with tire wheel assembly or weight imbalance, fluctuation and/or vibration greatly, a plurality of particles (or particulate) 20 are embedded among the I of pressurized chamber in the tire wheel assembly 10.The I of pressurized chamber is usually located between tire 11 and the wheel 12.In specific embodiment, it is uneven that particle 20 can reduce and/or eliminate basically any quality or weight with tire wheel assembly 10 relevant (that is, relevant with tire 11 or wheel 12).In addition, particle 20 can also reduce radially, laterally even the tangential force fluctuation, and reduce or buffering via the unsprung weight M of vehicle
UVibration with tire 11 generations.Further, particle 20 also can reduce tire drag.Because particle 20 free-flow in the I of pressurized chamber; Particle 20 can change them where necessary in indoor position, to be suitable for and to reduce any quality that during the operating life of the tire 11 of tire 11 duration of works and tire wheel assembly 10 and/or wheel 12, possibly occur or weight is uneven, fluctuation and/or vibration.Can replace using other wheel balance product to realize any quality or unbalanced minimizing of weight and/or correction to tire 11 and/or wheel 12; These products for example are plumbous counterweight block or other balance strip, and it can be installed to the inside or the outer surface of wheel.And these wheel balance products or counterweight also can be used to unite use with particle 20, for example, when tire wheel assembly 10 by balance at first and subsequently a plurality of particles 20 are embedded in the tire wheel assemblies 10.
A plurality of particles 20 can embed among the I of pressurized chamber via the tire pressurization valve, or when particle 20 sizes during greater than valve openings, particle 20 can be put into chamber I before tire 11 be installed on the wheel 12 fully.When particle 20 being put into chamber I rather than during via pressurizing valve, particle 20 is free to the form of form or set and puts into chamber I, for example, in degradable bag or as the agglomerate of particle 20.At work, bag or agglomerate can be degenerated during tire working subsequently, because warm and/or bag or agglomerate roll as chamber I during tire working, with the particle 20 that free form is provided.This process can repeat in each tire wheel assembly 10 of vehicle, and in a single day accomplishes, fluctuation that each tire wheel assembly 10 can reduce and the operation of the state of vibration, and fluctuation is all cushioned by particle 20 with vibration and/or absorbs.
With reference now to accompanying drawing 6A and 6B,, particle 20 can comprise one or more vacancies (that is chamber) 40 in particle body 30.Vacancy 40 can be set to increase the balance and/or the energy absorption capability of particle 20.For example, vacancy 40 can hold air or other gas, or can fill any other at least in part and fix or fluent material, and for example, viscosity or viscoelasticity energy absorbent material are with distortion and/or the resilience that influences particle 20.For example, possibly be out of shape more significantly than the particle 20 that does not have vacancy 40 at the particle 20 that when particle 20 clashes into inside tires, has vacancy 40 during the tire working.Through increasing the distortion of particle 20, more energy is absorbed by particle 20, and is further reduced via fluctuation tire or that in tire, take place and/or vibration.In specific layout; Granule interior or vacancy 40 can be filled viscoelastic material and be used to improve energy absorption capability; And the outside of particle 20 can be formed by more durable material, the working life that this can bear environment and the bump in the tire better and increase particle 20.In addition; Vacancy 40 can hold weight material or wheel balance material; Any quality of the minimizing of these material improvement particles 20 or tire-vehicle wheel component 10 or the unbalanced ability of weight, wherein these balance materials for example can have than form the higher density or the proportion of material of body 30 on every side of particle 20.
In specific embodiment; Example shown in Fig. 7 A; One or more holes or slit 42 can be extended from vacancy 40 and between the outside of this vacancy 40 and corresponding particle 20; So that allow vacancy 40 to ventilate and allow particle 20 to be out of shape (or compression) more during particles hit in during tire working, and/or any air or the compression of gas or the pressurization of increase in the minimizing vacancy 40.The resilience of particle (perhaps when this can be used for further reducing particles hit during the tire working; In other words; The energy absorption capability of particle 20 during the increase tire working); Therefore gas or air are allowed to put into the internal chamber I of tire during the tire bump, and this has reduced the air of the further compressed container of particle in vacancy 40 or the ability of gas when when particle is clashing into during, being out of shape.Be understandable that each hole or slit 42 can comprise arbitrary shape or size.
Any particle 20 can comprise the vacancy 40 of any required form of one or more formation, and is regular or irregular.For example, continue 6A and 6B with reference to the accompanying drawings, vacancy 40 can be respectively spherical or oval shape.Spherical comprises having spherical vacancy 40, and shown in the example among Fig. 6 A, and oval shape comprises non-spherical form, shown in Fig. 6 B.Through further example, vacancy 40 can comprise in this article concerning particle 20 any feasible shapes arbitrarily.The same with the external shape of particle 20, imbalance, fluctuation or the vibration any new or that change to tire wheel assembly 10 can be improved in the shape in any vacancy 40 in this particle 20 and/or location.For example; Centered (promptly in particle 20; Single symmetrical vacancy 40 with one heart) can provide the particle 20 of better quality or weight balancing; Thereby realize improved again location or the mobility of any this particle 20 in chamber I so that improve roll capability, this can improve the reaction enthusiasm that imbalance, fluctuation or the vibration any new or that change of tire wheel assembly 10 were proofreaied and correct or reduced to particle 20.6A for example, shows single sphere (symmetry) vacancy 40 in spherical (symmetry) particle 20 with reference to the accompanying drawings.The single symmetrical vacancy 40 that replaces centered, a plurality of vacancies 40 can be arranged near the particle 20 so that balance to be provided in particle center.In alternative; Asymmetric vacancy 40 can provide in particle 20 with respect to the quality at the central axis of particle or center or weight imbalance and rotate to resist; This can allow particle in chamber I, to locate himself more quickly reducing or to proofread and correct any imbalance, fluctuation or vibration new or that change better, and the unnecessary location again of resisting any because arbitrarily small interference or causing unusually.6B with reference to the accompanying drawings, non-sphere (asymmetrical) vacancy 40 in particle 40 centered (with one heart) to provide weight unbalanced particle 20.The particle 20 that can be contemplated that disequilibrium (that is, weight uneven) can comprise the vacancy 40 of the centered of symmetry.And in alternative, can comprise the vacancy 40 of arbitrary shape because be understandable that any particle 20, the spheric granules shown in Fig. 6 A for example can comprise the unbalanced vacancy of non-sphere or weight shape, the ellipsoidal shape shown in Fig. 6 B.In addition, can arrange that a plurality of vacancies 40 are to provide weight unbalanced particle 20.In the embodiment who considers arbitrarily, the solid or liquid of any counterweight can or can not partly be filled in vacancy 40.
Quality in the particle 20 or weight imbalance also can through with vacancy 40 in particle 20 non-medially (promptly; With one heart non-) locate and realize; Shown in the example among accompanying drawing 7A and the 7B, for example in order in particle 20, to produce the weight imbalance to resist the rotation of these particles.And, vacancy 40 can in particle 20, locate at an arbitrary position and as required strategic point arrange, for example, as among Fig. 6 A and the 6B illustrative in particle 20 medially (that is, with one heart) locate so that can bring the particle 20 of weight balancing.The placement of vacancy 40 in particle 20 can provide the non-thickness t of body 30, shown in example among Fig. 7 A and the 7B.The combination in any with asymmetrical particle 20 and vacancy 40 that can be contemplated that symmetry can be arranged as required so that weight balancing or unbalanced particle 20 to be provided.
With reference now to accompanying drawing 8,, particle 20 can comprise the body 30 that formed by first material and the partially filled at least or vacancy 40 of basic complete filling second material 50 at the most.In one embodiment, first material can form housing, is characterized by the thickness t around the single vacancy 40.Based on the position in single vacancy 40 in the particle 20, body thickness t can be constant or consistent, perhaps variable basically.As stated, be understandable that second material 50 can comprise, for example, counterweight or wheel balance material or energy absorbing material are like viscosity or viscoelastic material.In addition, second material 50 can form any fluid (that is, liquid or gas), solid or assemblying body.Wheel balance material or synthetic can comprise by Fogal at U. S. Patent 7; 022; 753 or 6; In 979,060 in disclosed those materials any, it comprises Metal Ball or particle, for example; Stainless Steel Ball or particle; And other wheel balance synthetic that those skilled in the art knew, for example, by pearl, pellet shot from a slingshot, particle, dust and the powder of iron content and non-ferrous metal, pottery, plastics (comprising thermoplastic), glass bead and aluminium oxide formation.
As shown in Figure 9, particle 20 also can comprise and as required, spreads all over particle body 30 spaced apart a plurality of vacancies 40.For example, continue with reference to figure 9, vacancy 40 can be extended in body 30 fully, maybe can be exposed to the outer surface of particle 20.No matter particle 20 comprises single vacancy 40 or a plurality of vacancy 40, any this vacancy 40 can with the external communications of particle 20, as extend to any slit or the aperture in the vacancy 40 of embedding through outer surface from particle 20.For example; If vacancy 40 is exposed to the air that is contained in the chamber I arbitrarily; The air or other material that when any particle deformation, are contained in the vacancy 40 during the tire working can not compress basically, thereby this any elasticity that can reduce 20 pairs of any above-mentioned modification of particle is rebounded or responded and the energy absorption of enhanced granule 20.Therefore, particle 20 can be perforate particle or closed pore particle 20, and this can form for example perforate and closed pore sponge, foam or other plastics or polymer.Particle 20 with a plurality of vacancies 40 also can be described to have at least a second kind of material 50 that in particle 20, disperses.Can be contemplated that particle 20 can comprise that other material beyond second kind of material 50 is used to be included in any vacancy 40, it can or can not comprise second kind of material 50.
With reference now to particle 20, composition; Particle body 30 can be formed by any material requested; And/or vacancy 40 can be partially filled at least or any material requested of complete filling roughly at the most; This any material requested can comprise; Independent or combination, polymer, plastics (it comprises thermoplastic), elastomer, fluid or metal.In specific embodiment, every kind of above-mentioned material also can comprise energy snubber or absorbent material, and it can be viscosity or viscoelastic material.Because viscosity and viscoelastic material are littler (promptly than other elastic material reactions; Provide very little reaction to upspring); Particle 20 can become along tire location more quickly, and also can keep any above-mentioned position better, thus during tire working the tire fluctuation.In addition, shock-absorbing capacity also can absorb any vibration of transmitting via tire 11.Viscoelastic material has elasticity and viscosity.For example, when to pure elastic material imposed load, all energy of during the corresponding strain of this material, storing all are returned after load removes.On the contrary, the pure viscosity material after corresponding load removes, do not return any storage strain energy so that pure buffering to be provided.Therefore, the behavior that viscoelastic material has made up elasticity and viscosity can endergonic energy snubber material to provide, so that reduce impact force and the vibration that acts on the tire wheel assembly 10 or produced by tire wheel assembly 10.
The damping capacity of viscoelastic material can be quantified as has storage modulus E ' and loss modulus E ".The elastic behavior (that is, elastic response) of storage modulus E ' and viscoelastic material is relevant, and loss modulus E " with the viscous behavior (that is, viscous response) of viscoelastic material, perhaps, in other words, the ability of material dissipation energy is relevant.Usually damping capacity is quantized by tangent Delta (tan delta or tan δ), and it is loss modulus E " (that is, viscous response) and storage modulus E ' (that is) ratio, elastic response, or E "/E '.The tangent Delta is to measure what lag behind, and it is measuring the energy that is dissipated by the viscoelasticity elastomer during the cyclic deformation (loading and unloading).Viscoelastic property with tangent Delta exosyndrome material is known in those skilled in the art.The tangent Delta is high more, and energy loss is high more.For perfect elastic material or polymer, the elasticity Delta equals zero.The tangent Delta is subjected to the influence of temperature and material structure, for example, and crystallization degree, crosslinked and molecular mass.Because pneumatic tire is known as in the scope from atmospheric temperature to several Baidu in the temperature that is stood during the tire working, so the energy snubber material can be chosen as the desirable tangent delta values with the tyre temperature scope that is used to expect.
In specific embodiment, particle 20 or particle body 30 are by having desirable hysteresis or power absorption or power buffering, and the viscoelastic material of performance is formed, and/or vacancy 40 is partially filled at least or this viscoelastic material of complete filling roughly at the most.In one embodiment, viscoelastic material is Sorbothane
, the visco-elasticity polyurethane macromolecular material of producing by the Sorbothane company of Kent, Ohio.For having 30 Shores (Shore), 00 scleroscopic Sorbothane
Material; The characteristic of this material under atmospheric temperature is under 5 hertz of excitations, to have about 0.30 tangent delta values; Under 15 hertz of excitations, has about 0.38 tangent delta values; And the tangent delta values that under 30 hertz of excitations, has about 0.45, all under the decrement of 2% strain and 20%, record.For having 50 Shores, 00 scleroscopic Sorbothane
Material; The characteristic of this material under atmospheric temperature is under 5 hertz of excitations, to have about 0.56 tangent delta values; Under 15 hertz of excitations, has about 0.58 tangent delta values; And the tangent delta values that under 30 hertz of excitations, has about 0.57, all under the decrement of 2% strain and 20%, record.For having 70 Shores, 00 scleroscopic Sorbothane
Material; The characteristic of this material under atmospheric temperature is under 5 hertz of excitations, to have about 0.56 tangent delta values; Under 15 hertz of excitations, has about 0.60 tangent delta values; And the tangent delta values that under 30 hertz of excitations, has about 0.59, all under the decrement of 2% strain and 20%, record.Atmospheric temperature is a room temperature, and it between about 60-80 Fahrenheit, this means that it can high slightly point or low spot usually.Other viscoelasticity or cohesive material can be used to replace Sorbothane
For example, polymer can be the thermoplastic materials vulcanized rubber that comprises the polypropylene and the mixture of sulfuration ethylene propylene diene rubber, and wherein polypropylene is the continuous phase of thermoplastic materials vulcanized rubber.A kind of such material is the sarlink that is produced by DSM
3140.In another embodiment, polymer can be a viscoelastic material, and it comprises butyl rubber and the product NAVCOM that vibrates such as Althorp/SIMS
TMAnd so on the polymeric amorphous mixture of chlorobutadiene.In another embodiment, the viscoelastic material that is used to form particle 20 can be a PVC.
Can be contemplated that and to use viscoelastic material with the tangent delta values except above disclosed value.For example; Particle 20 or particle body 30 form by having 30 Shores, 00 scleroscopic viscoelastic material; And/or the partially filled at least this material in vacancy 40; The characteristic of this material under atmospheric temperature is under 5 hertz of excitations, to have about at least 0.15 or 0.20 tangent delta values; Under 15 hertz of excitations, has tangent delta values at least about 0.20 or 0.25; And/or under 30 hertz of excitations, have a tangent delta values at least about 0.30 or 0.35, all under the situation of the decrement of 2% strain and 20%, record.Particle 20 or particle body 30 form by having 50 Shores, 00 scleroscopic viscoelastic material; And/or the partially filled at least this material in vacancy 40; The characteristic of this material under atmospheric temperature is under 5 hertz of excitations, to have about 0.30 or 0.35 tangent delta values; Under 15 hertz of excitations, has about 0.40 or 0.45 tangent delta values; And/or under 30 hertz of excitations, have a tangent delta values of about 0.40 or 0.45, all under the situation of the decrement of 2% strain and 20%, record.Particle 20 or particle body 30 form by having 70 Shores, 00 scleroscopic viscoelastic material; And/or the partially filled at least this material in vacancy 40; The characteristic of this material under atmospheric temperature is under 5 hertz of excitations, to have about at least 0.40 or 0.45 tangent delta values; Under 15 hertz of excitations, has about at least 0.45 or 0.50 tangent delta values; And/or under 30 hertz of excitations, have a tangent delta values of about at least 0.45 or 0.50, all under the situation of the decrement of 2% strain and 20%, record.Atmospheric temperature is a room temperature, and it between about 60-80 Fahrenheit, this means that it can high slightly point or low spot usually.
In other embodiments, particle 20 or particle body 30 be by forming based on predetermined minimum material than reselection procedure, and/or vacancy 40 is partially filled at least or this material of complete filling roughly at the most.Proportion is defined as under specified temp and pressure the ratio of the density of the density of giving fixed solid or liquid substance and water.Proportion is bigger than the density of water greater than 1 material, and therefore (the not influence of Considering Surface tension force) these materials sink in water, and proportion is littler than the density of water less than 1 material, therefore in water, floats.In one embodiment, can use minimum proportion to be at least 0.90 material.In other embodiments, proportion is about at least 1.1, or about at least 1.3.Yet, can be contemplated that and can use material with other proportion.
In another embodiment, particle 20 or particle body 30 are formed by the material of selecting based on the predetermined hardness meter, and/or vacancy 40 is partially filled at least or this material of complete filling roughly at the most.Hardness tester is measuring of the hard degree of material.In specific embodiment, particle 20 by hardness count about 70 Shores 00 or still less, 50 Shores 00 or still less or 30 Shores 00 or material still less form.In other embodiments, hardness tester approximately be 70 Shore A or still less, 50 Shore A or still less or 30 Shore A or still less.Yet, can be contemplated that to use to have other scleroscopic materials.In specific embodiment, have than the size of the particle 20 of low-hardness tester and weight less than particle 20 with higher hardness meter.
Be understandable that particle 20 can comprise arbitrary dimension.Yet, pneumatic tire usually via channelled valve rod with air or other gas pressurized, this passage extends between I of pressurized chamber and tire 11 outsides.Recently, filter with valve rod use with prevent particle 20 from the pressurized chamber unexpected release, and/or prevent that otherwise particle 20 is stuck in valve rod.In order to eliminate the use of filter, in specific embodiment, particle 20 has predetermined smallest particles size or the diameter greater than valve stem passage.Therefore, in specific embodiment, the diameter of particle 20 is at least 0.1875 inch, or diameter is at least 0.25 inch.In other embodiments, particle 20 has and approximates at least 0.50 inch greatly, equals at least 0.575 inch, equals at least 0.600 inch, equals at least 0.700 inch, equals at least 0.850 inch, equals at least 0.950 inch or equal at least 1.0 inches diameter.In other embodiments, the diameter of particle 20 can be 4 inches or bigger.The ground that conforms to the particle 20 of other shape, the size relevant with all diameters of before having confirmed can the replacing representation particle height, width or length.For example, particle 20 can have at least 0.1875 inch height, width or length.
As previously mentioned, at load tire duration of work vibration and fluctuation possibly appear, wherein when tire gets into and withdraws from tire footprint, and generation power and vibration owing to tyre deflection at least in part.In addition, when tire strikes object, as the road surface hollow appear at working surface or road surface R on other object, can produce power and vibration.Therefore, through the particle 20 that freely turns round in the I of pressurized chamber that is provided at tire 11, particle 20 can move to the certain interior surfaces of tire so that proofread and correct at least in part in tire and/or fluctuation that takes place on the tire and vibration.In addition, the energy absorption of particle 20 through allow particle 20 and absorb and/or disturb at least a portion act in the tire 11 with tire 11 on vibration (that is frequency) and power and improved the efficient of particle 20.This not only continues to allow particle 20 to work as granule damper, particle comes cushion effect and vibration through the bump surface of tyre to disturb undesirable power and/or vibration thus, and it also provides the also material of cushion effect and vibration.Now, on effect, two kinds of buffering method-particles (bump) buffering and material buffering occur, each all upsets and destroys power and the vibration of ground interference effect on tire 11.Further, through using buffering (energy absorbs with power) material, particle 20 less resilience after clashing into inner wheel tyre surface or other particle, this allow the particle self adaption now and near tire quickly in the correct position stop motion.This also can improve the rolling resistance of tire.
Rolling resistance is that the load tire resists the trend of rolling, and it is at least partly caused by tyre deflection when tire gets into tire footprint.Along with tire gets into impression, tire sinks and tyre surface bump working surface or road surface R, fluctuation and vibration that it can produce resistance and extend from impression.Through using particle 20, the energy when it absorbs bump more easily, particle 20 can overcome tire better through absorbability and vibration and resist the trend of rolling.In addition, through increasing the overall weight of particle 20 total quantitys in the I of pressurized chamber, when tyre rotation, more momentum can be provided through particle.This helps overcoming the rolling resistance of (improvement) tire 11, because extra momentum is useful to overcoming the power that resists tyre rotation.Size and quality through increasing particle 20 and/or the quantity that is increased in the particle 20 in the I of pressurized chamber can provide the increase of overall weight.For example, through being in 22 inches the I of pressurized chamber of tire 20 ounces particle 20 to be provided at diameter, when vehicle with under 67 miles situation of travelling approximately per hour during tyre rotation particle 20 about 61 pounds power is provided.By contrast, in the I of the pressurized chamber of identical tire 11, provide 12 ounces particle 20 that about 36 pounds power can be provided.Therefore,, possibly reduce and/or overcome the fluctuation and the vibration of higher quantity in the I of pressurized chamber through more particles weight is provided, and because the increase of momentum and the minimizing of fluctuation and vibration, rolling resistance possibly reduce.In specific embodiment, about at least 10 ounces particle 20 is placed in the I of pressurized chamber of passenger tyre-vehicle wheel component 10.In other embodiments, about at least 15 ounces or about at least 20 ounces particle 20 are placed in the I of pressurized chamber of passenger tyre-vehicle wheel component 10.In other embodiments, the particle 20 that weight is littler possibly be placed in the I of pressurized chamber of motorcycle tire, and for example, the particle 20 that perhaps weight is bigger is placed in bulldozer or the aero tyre.As stated; One or more tires or wheel balance weight product; Like plumbous counterweight block; For example; Or be applicable to other the known counterweight product that appends to tire or wheel; Also can be suitable for tire or wheel mass uneven, use simultaneously with buffering particle 20, it be used for the correction to fluctuation and vibration.
With reference now to Figure 4 and 5,, wherein show countless radially impact forces (Fn), these impact forces during tire wheel assembly rotates road surface R and tyre surface T than lower part or impression B between change continuously.Almost numerous position (Pn) on horizontal width W that spreads all over impression B and length L is located to have countless this power Fn, and five such impact force F1-F5 roughly illustrating at separately position P1-P5 of Figure 4 and 5.As shown in Figure 5, can suppose because at the tire wear of specific crash power position, at the pavement conditions of each impact force position, act on the factors such as load on each tire wheel assembly, power F1-F5 differs from one another.Therefore, minimum impact force possibly be the power F1 at the P1 place in the position, and maximum impact force possibly be the power F2 at the P2 place in the position.Once more, these power F1-F5 only be laterally between sidewall SW1 and SW2 across tire 11 and circumferentially along the example of the countless/unlimited power of inside tires, these power constantly produce and along with tire wheel assembly 10 rotates and changes.
Because these impact forces produce during tire wheel assembly rotates; Particle 20 works so that the mode of another kind of buffering vibration, frequency and/or rolling resistance to be provided as bump or granule damper, this mode be in vibration, frequency and/or rolling resistance each by as described above at least in part owing to the viscous characteristics of the viscoelastic material that is used for forming particle 20 being absorbed.Subsequently, particle 20 can be reorientated to proofread and correct any fluctuation that exists from their initial position based on the position and the order of severity of impact force Fn.Particle 20 reorientate maybe with the big or small inverse correlation mutually of impact force.For example, maximum, force F1 (Fig. 5) maybe be in the position P1, and because these bigger power F1, particle 20 compelled point of distance P1, the particle of minimum number is retained in a P1, because the highest in this place's load force.On the contrary, impact force F possibly be minimum at impact force location point P2, and therefore, more particles 20 will be retained in this place (Fig. 4).In other words, at the highest or maximum impact force (F1 in the example) some place, the quantity of particle 20 is minimum; And at minimum impact force (the some P2 in the example) some place; The quantity of particle 20 possibly increase in proportion, thereby extra quality is provided, and it can absorb and cushion vibration or impact force Fn.Therefore, vibration or impact force Fn can force particle 20 constantly to move away from higher or excessive impact force F1 and towards the zone of minimum impact force F2.
Can be contemplated that can provide in chamber I more than one type particle 20 to form polymorphic synthetic.Therefore; The mixture of the variable grain 20 that quantity do not wait can be provided; Wherein these particles 20 can be different, as in size, weight, shape and material and/or vacancy 40 quantity, position, shape with fill at least in part aspect the material in these vacancies 40.The benefit of polymorphic particle synthetic is that specific particle can respond less power quickly, and other particle can respond bigger power quickly.In addition, the particle 20 of a particular group can be used for the tire imbalance, and fluctuation of other correction certain force and/or vibration.
When tire wheel assembly 10 rotated, particle 20 possibly roll in assembly 10 and receive enough centripetal force up to assembly 10 and particle 20, and particle 20 maybe be by " nail " internal surface to tire 11 like this.When in assembly 10, rolling, particle 20 possibly clash into the internal surface of assembly 10 and other particle in a plurality of particle 20 repeatedly, and this possibly cause the surface abrasion and the breaking-up of particle 20.Therefore, particle 20 can be chosen as has predetermined hardness or hardness range, and this hardness or hardness range are enough to prevent damage when particle 20 from rolling in assembly 10.In one embodiment, the hardness range of particle 20 can be from being no more than about 30 to 70 Shores, 00 hardness, or from 30 to 70 Xiao A hardness.
Like disclosed and expection here, particle 20 can be known by one of skill in the art any or a plurality of technology form.For example, particle 20 can form through two preparatory molded half ones or a plurality of independent sector that combines particle 20, as using tackiness agent or analog.
Though the present invention describes with reference to certain preferred embodiment, be conspicuous not breaking away from like following claim variation and the improvement of carrying out some under the defined scope of the present invention for a person skilled in the art.
Claims (22)
1. synthetic that is used for improving the correction of force unbalance, fluctuation and/or Vibrant buffer to tire wheel assembly comprises:
Be used to be placed in a plurality of particles in the tire wheel assembly,
Wherein each said particle comprises the vacancy.
2. synthetic as claimed in claim 1, wherein said vacancy is included in the particle approximately with one heart.
3. synthetic as claimed in claim 1, wherein the body of particle is formed by first kind of material and the partially filled at least second kind of material in said vacancy.
4. synthetic as claimed in claim 3, wherein said second kind of material is fluid.
5. synthetic as claimed in claim 3, wherein said second kind of material is the wheel balance material.
6. synthetic as claimed in claim 3, wherein said second kind of material is energy absorbing material.
7. synthetic as claimed in claim 3, wherein first kind of material is viscoelastic material.
8. synthetic as claimed in claim 1, wherein particle is spherical.
9. synthetic as claimed in claim 8, wherein the vacancy is spherical.
10. synthetic as claimed in claim 1, wherein the vacancy is communicated with the outer surface of particle.
11. synthetic as claimed in claim 1, wherein particle has from 0.1875 inch to 4 inches diameter.
12. a method of correcting that is used for improving force unbalance, fluctuation and/or Vibrant buffer to tire wheel assembly may further comprise the steps:
Tire wheel assembly is provided;
A plurality of particles are provided, and wherein each said particle comprises the vacancy; With
Said a plurality of particles are placed in the pressurized chamber in the said tire wheel assembly.
13. like the method for claim 12, wherein said vacancy is approximately concentric in particle.
14. like the method for claim 12, wherein the body of particle is formed by first kind of material and the partially filled at least second kind of material in said vacancy.
15. like the method for claim 14, wherein said second kind of material is fluid.
16. like the method for claim 14, wherein said second kind of material is the wheel balance material.
17. like the method for claim 14, wherein said second kind of material is energy absorbing material.
18. like the synthetic of claim 14, wherein first kind of material is viscoelastic material.
19. like the method for claim 12, wherein particle is spherical.
20. like the method for claim 12, wherein the vacancy is spherical.
21. like the method for claim 12, wherein the vacancy is communicated with the outer surface of particle.
22. like the method for claim 12, wherein particle has from about 0.1875 inch to 4 inches diameter.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14354309P | 2009-01-09 | 2009-01-09 | |
| US61/143543 | 2009-01-09 | ||
| PCT/US2010/020519 WO2010081016A1 (en) | 2009-01-09 | 2010-01-08 | Composition for correcting tire-wheel assembly imbalances, force variations and vibrations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102348908A true CN102348908A (en) | 2012-02-08 |
Family
ID=42316838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010800113156A Pending CN102348908A (en) | 2009-01-09 | 2010-01-08 | Composition for correcting tire-wheel assembly imbalances, force variations and vibrations |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP2386035A4 (en) |
| JP (1) | JP2012514563A (en) |
| CN (1) | CN102348908A (en) |
| AU (1) | AU2010203532A1 (en) |
| BR (1) | BRPI1006168A2 (en) |
| CA (1) | CA2748744A1 (en) |
| MX (1) | MX2011007237A (en) |
| RU (1) | RU2011133203A (en) |
| WO (1) | WO2010081016A1 (en) |
| ZA (1) | ZA201104821B (en) |
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| GB2408415B (en) | 2003-11-19 | 2008-04-09 | Vodafone Plc | Networks |
| US20100101692A1 (en) * | 2008-10-29 | 2010-04-29 | International Marketing, Inc. | Composition for correting force variations and vibrations of a tire-wheel assembly |
| JP5737278B2 (en) * | 2011-12-21 | 2015-06-17 | 日立化成株式会社 | Circuit connection material, connection body, and method of manufacturing connection body |
| AU2017224128A1 (en) | 2016-02-26 | 2018-09-13 | International Marketing, Inc. | Composition for reducing tire-wheel assembly imbalances, force variations, and/or vibrations |
| JP7151188B2 (en) * | 2018-06-08 | 2022-10-12 | 住友ゴム工業株式会社 | Tire imbalance correction method and tire |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4269451A (en) * | 1977-06-17 | 1981-05-26 | Narang Rajendra K | Wheel and tire balancing system |
| JPS6012321A (en) * | 1983-07-01 | 1985-01-22 | Yoshiteru Ebara | In-tyre rubber balance weight and insertion chip |
| US5335463A (en) * | 1991-09-16 | 1994-08-09 | Per Reinhall | Composition for vibration damping |
| US5766501A (en) * | 1994-05-31 | 1998-06-16 | M & R Tire Products Inc. | Tire balancing |
| US6128952A (en) * | 1997-09-30 | 2000-10-10 | Leblanc; Roger | Tire balancing using glass beads |
| JP2000148156A (en) * | 1998-11-05 | 2000-05-26 | Hiroshi Yamada | Bell structured particle, its manufacture, and vibration absorber |
| US6412524B1 (en) * | 2000-11-17 | 2002-07-02 | International Marketing, Inc. | Apparatus for introducing flowable force compensating material into a tire |
| JP4645014B2 (en) * | 2003-10-15 | 2011-03-09 | 卓三 岩壷 | Colloidal damper |
| JP2005265068A (en) * | 2004-03-18 | 2005-09-29 | Sekisui Chem Co Ltd | Microcapsule and composition containing microcapsule |
| JP4990485B2 (en) * | 2004-08-19 | 2012-08-01 | 株式会社ブリヂストン | Tire and rim assembly and hollow particles arranged inside the assembly |
| US8877250B2 (en) * | 2005-12-20 | 2014-11-04 | Bridgestone Corporation | Hollow nano-particles and method thereof |
-
2010
- 2010-01-08 BR BRPI1006168A patent/BRPI1006168A2/en not_active Application Discontinuation
- 2010-01-08 WO PCT/US2010/020519 patent/WO2010081016A1/en active Application Filing
- 2010-01-08 CN CN2010800113156A patent/CN102348908A/en active Pending
- 2010-01-08 CA CA2748744A patent/CA2748744A1/en not_active Abandoned
- 2010-01-08 RU RU2011133203/11A patent/RU2011133203A/en not_active Application Discontinuation
- 2010-01-08 AU AU2010203532A patent/AU2010203532A1/en not_active Abandoned
- 2010-01-08 EP EP10729581A patent/EP2386035A4/en not_active Withdrawn
- 2010-01-08 MX MX2011007237A patent/MX2011007237A/en not_active Application Discontinuation
- 2010-01-08 JP JP2011545465A patent/JP2012514563A/en active Pending
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2011
- 2011-06-29 ZA ZA2011/04821A patent/ZA201104821B/en unknown
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| RU2011133203A (en) | 2013-02-20 |
| CA2748744A1 (en) | 2010-07-15 |
| EP2386035A4 (en) | 2012-05-02 |
| WO2010081016A1 (en) | 2010-07-15 |
| ZA201104821B (en) | 2012-12-27 |
| BRPI1006168A2 (en) | 2016-02-23 |
| MX2011007237A (en) | 2011-10-11 |
| AU2010203532A1 (en) | 2011-07-28 |
| JP2012514563A (en) | 2012-06-28 |
| EP2386035A1 (en) | 2011-11-16 |
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Application publication date: 20120208 |